Frame for door or window opening
US4637183A · kind A · utility
19Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1984 |
| Grant date | Jan 20, 1987 |
| Priority date | — |
| Expiry date | Oct 12, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A frame having a U-shaped cross-section is clamped at a wall rim bounding an opening in a wall by means of a clamping jaws. The clamping jaws are formed by a steel sheet bent over in its longitudinal direction and are profiled substantially throughout their lengths, so that with a small thickness of material the clamping jaws mainly derive their rigidity from their profile.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.